Data:L11n408/HOMFLYPT Polynomial

$- z 2 a 6 - a 6 + z 4 a 4 + 2 z 2 a 4 + a 4 + z 4 a 2 + 3 z 2 a 2 + a 2 z -2 + 3 a 2 - z 4 -5 z 2 -2 z -2 -5 + z 2 a -2 + a -2 z -2 + 2 a -2$